Mars self-orientating method of large elliptical orbit Mars probe

A Mars probe and large ellipse technology, applied in astronomical navigation, attitude control and other directions, can solve problems such as difficulty in ensuring real-time performance, and achieve the effect of reliable and autonomous fire directional control

Active Publication Date: 2013-04-03
上海航天控制工程研究所
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Problems solved by technology

However, in China at this stage, it is difficult to guarantee real-time orbit determination on the ground, and autonomous navigation sensors such as navigation cameras or ultraviolet sensors are still in the pre-research stage.

Method used

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  • Mars self-orientating method of large elliptical orbit Mars probe
  • Mars self-orientating method of large elliptical orbit Mars probe
  • Mars self-orientating method of large elliptical orbit Mars probe

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Embodiment Construction

[0022] The specific steps of implementing the present invention are as follows: firstly, according to the initial orbital parameters, carry out corresponding transformation, take the Mars flat equatorial coordinate system (MMEQ) as the reference coordinate system, adopt the analysis method to carry out autonomous orbital recursion; According to the position of the detector in the Mars flat equator coordinate system, the reference calculation of the fire attitude is carried out; finally, according to the time given by the remote control command, the detector uses the combination of the star sensor and the flywheel to perform the attitude maneuver from the sun orientation to the fire orientation, and Perform a short-term attitude hold after maneuvering into position.

[0023] Such as figure 1 As shown, it describes the interrelationship between the Earth's equatorial inertial coordinate system (MINS) at the center of Mars and the Mars equatorial coordinate system (MMEQ), and the...

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Abstract

The invention discloses a Mars self-orientating method of a large elliptical orbit Mars probe, to enable a Mars probe to accomplish three-axis stable control to Mars orientation under the condition that the Mars probe does not completely depend on ground monitoring and control and self-orientation sensors are not available. The method comprises the following steps of: carrying out corresponding short-term orbit recursion calculation according to the number of initial orbits and a reference coordinate system for describing the number of the orbits; adopting a simplified analysis method for Mars self-recursion, and adopting a high precision numerical method for orbit recursion on the ground; establishing a Mars orientation reference coordinate system by taking a Mars center-probe position vector as the Z-axis direction; and turning to a posture working mode for Mars-orientation after the Mars receives remote control instructions. Compared with the prior art, the Mars self-orientating method has the beneficial effects that under the condition that the ground communication has time delay and the self-orientation sensors cannot achieve engineering application, the Mars self-orientation control of the Mars probe is reliably realized through the orbit recursion and the establishment of the orientation reference coordinate system.

Description

technical field [0001] The invention relates to a Mars probe autonomous fire orientation technology. In the case that there is a delay in the deep space exploration communication and the autonomous navigation sensor cannot be applied in engineering, the orbit recursion and the establishment of the orientation reference coordinate system are reliable. Realize the autonomous control of the fire orientation of the Mars rover. Background technique [0002] During the flight phase of the Mars rover around Mars, in addition to the requirements for the attitude control platform such as directional energy to the sun and communication to the ground, in order to realize scientific exploration such as taking pictures of Mars, the attitude control platform must have the function of directional control of Mars. [0003] The existing domestic Mars rover attitude control platform lacks relevant technologies as a reference. In order to realize the ground orientation function, the near-Eart...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/02G05D1/08
Inventor 尹海宁杜宁蔡陈生周连文李芳华熊厚玲范蕾懿
Owner 上海航天控制工程研究所
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